CN102662116B - Portable type passive direct-current testing device for power cables - Google Patents
Portable type passive direct-current testing device for power cables Download PDFInfo
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- CN102662116B CN102662116B CN201210141600.0A CN201210141600A CN102662116B CN 102662116 B CN102662116 B CN 102662116B CN 201210141600 A CN201210141600 A CN 201210141600A CN 102662116 B CN102662116 B CN 102662116B
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- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 5
- 239000004703 cross-linked polyethylene Substances 0.000 description 3
- 229920003020 cross-linked polyethylene Polymers 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
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Abstract
The invention relates to a portable type passive direct-current testing device for power cables. The passive direct current testing device comprises a case, a voltmeter, a tramegger, a tramegger switching button, a high-voltage output cable, a high-voltage output cable conversion switch, an amperemeter, a direct-current high-voltage generator, a direct-current high-voltage generator switching button, a direct-current high-voltage generator current regulation knob, a ground terminal, a power conversion switch and a rechargeable battery, wherein the high-voltage output cable is arranged at the top end of the case and connected with the tramegger or the direct-current high-voltage generator through the cable conversion switch; the tramegger and the direct-current high-voltage generator are connected with the power conversion switch respectively through the switching buttons, and the power conversion switch is connected with the battery; and the direct-current high-voltage generator current regulation knob is used for regulating the output current of the direct-current high-voltage generator. According to the passive direct-current testing device, testing equipment on a high-voltage crossing interconnection spot of 110kV and above is simplified, the problem of no available power supply on the spot is solved, and the technical problem of unstable voltage and frequency of a power generator power supply is overcome.
Description
Technical field
The invention belongs to the testing apparatus of 110kV and above HV XLPE Power Cable, what be specifically related to is a kind of power cable portable passive direct current test apparatus.
Background technology
At present in the on-the-spot commissioning test of 110kV and above HV XLPE Power Cable; all need its cross interconnected system to carry out dependence test; comprise sheath protector direct current 1mA, oversheath insulation resistance and the test of 10kV DC break down voltage etc., required Portable device and annex are more.The instrument that the test of this intermediate item is used mainly contains megohmmeter, high voltage direct current generator etc., and for the scene of laying of 110kV and above high-tension cable, the high-tension cable of normal length more than one kilometer, in intermediate head place, oversheath is divided into some sections, and be provided with cross interconnected case, laying on-the-spot all cannot provide stable 220V AC power used for test, therefore have to provide power supply by portable electric generator for on-the-spot test, this power supply mode not only exists working environment noise large, the shortcoming that work space air quality is poor, also there is the problems such as potential safety hazard and supply voltage and frequency be unstable.
Summary of the invention
The object of the invention is to overcome in prior art working environment noise large, work space air quality is poor, and the unsettled problem of working site potential safety hazard and supply voltage and frequency provides a kind of power cable portable passive direct current test apparatus.
The present invention solves its technical matters and takes following technical scheme to realize:
A kind of power cable portable passive direct current test apparatus, comprise casing, voltage table, megohmmeter, megohmmeter shift knob, High voltage output cable, High voltage output cable switch, reometer, high voltage direct current generator, high voltage direct current generator shift knob, high voltage direct current generator current adjusting knob, ground terminal, transfer switch, rechargeable battery, described High voltage output cable is arranged on casing top, High voltage output cable is connected with megohmmeter through voltage table by High voltage output cable switch, High voltage output cable is connected with high voltage direct current generator through reometer by High voltage output cable switch, megohmmeter and high voltage direct current generator are respectively by megohmmeter shift knob, high voltage direct current generator shift knob is connected with transfer switch, transfer switch is connected with rechargeable battery is anodal, negative electrode of chargeable battery is connected with ground terminal, described high voltage direct current generator current adjusting knob is connected with high voltage direct current generator, regulates the output current of high voltage direct current generator.
And, be connected with external power supply socket between described transfer switch and ground terminal.
And, described rechargeable battery is 10AH, described external power supply socket connects vehicle-mounted 12V power supply.
Advantage of the present invention and good effect are:
1, a kind of power cable portable passive direct current test apparatus of the present invention, is simplified the testing equipment of the cross interconnected system for field test of 110kV and above HV XLPE Power Cable.
2, the present invention, by adopting rechargeable battery or Vehicular accumulator cell as power supply, has solved the situation that on-the-spot non-transformer can be used.
3, the present invention, by adopting rechargeable battery or Vehicular accumulator cell as power supply, has overcome generator power supply voltage and the unsettled technical barrier of frequency of prior art.
4, product weight of the present invention is light, volume is little, has greatly facilitated on-the-spot test work, increases work efficiency.
Brief description of the drawings
Fig. 1 is electrical schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is further described:
A kind of power cable portable passive direct current test apparatus, comprise casing 1, voltage table 2, megohmmeter 3, megohmmeter shift knob 4, High voltage output cable 5, High voltage output cable switch 6, reometer 7, the high generator 8 of direct current, high voltage direct current generator shift knob 9, high voltage direct current generator current adjusting knob 10, ground terminal 12, transfer switch 13, rechargeable battery 14, described High voltage output cable is arranged on casing top, High voltage output cable is connected with megohmmeter through voltage table by High voltage output cable switch, High voltage output cable is connected with high voltage direct current generator through reometer by High voltage output cable switch, megohmmeter and high voltage direct current generator are respectively by megohmmeter shift knob, high voltage direct current generator shift knob is connected with transfer switch, transfer switch is connected with rechargeable battery is anodal, negative electrode of chargeable battery is connected with ground terminal, described high voltage direct current generator current adjusting knob is connected with high voltage direct current generator, regulates the output current of high voltage direct current generator.
In an embodiment, between described transfer switch and ground terminal, be connected with external power supply socket 11, in order to the external power supply of pegging graft, in the time that rechargeable battery cannot charge, use.
In an embodiment, described rechargeable battery is 10AH, and described external power supply is vehicle-mounted 12V power supply.
In an embodiment, for megohmmeter, the high voltage direct current generator of different operating voltage, described 10AH, the lead-in wire that 12V rechargeable battery is drawn corresponding operating voltage is megohmmeter or high voltage direct current generator power supply.
Application implementation step of the present invention is as follows:
(1) before a kind of power cable uses at the scene with portable passive direct current test apparatus, transfer switch, High voltage output cable switch are all arranged on neutral gear position, ground terminal ground connection.
(2) in the time using megohmmeter test, transfer switch, High voltage output cable switch are all arranged on megohmmeter test shelves, when being placed into tested high-voltage crosslinking place, High voltage output cable is ready to after test, press megohmmeter shift knob and test, by voltage table, megohmmeter read test result.
(3) in the time using high voltage direct current generator test, transfer switch, High voltage output cable switch is all arranged on high voltage direct current generator test gear, when being placed into tested high-voltage crosslinking place, High voltage output cable is ready to after test, pressing high voltage direct current generator shift knob tests, if output current and test request electric current have deviation, regulate current adjusting knob to 1mA, voltage tester value U while reading 1mA electric current, according to voltage tester numerical value, by regulating current adjusting knob to 75%U voltage, reading current value, as final testing result.
(4) after being completed, megohmmeter shift knob, high voltage direct current generator shift knob disconnect, and transfer switch, High voltage output cable switch all return to neutral position.
It is emphasized that; embodiment of the present invention is illustrative; instead of determinate; therefore the present invention is not limited to the embodiment described in embodiment; every other embodiments that drawn by those skilled in the art's technical scheme according to the present invention, belong to the scope of protection of the invention equally.
Claims (1)
1. a power cable portable passive direct current test apparatus, it is characterized in that: comprise casing, voltage table, megohmmeter, megohmmeter shift knob, High voltage output cable, High voltage output cable switch, reometer, high voltage direct current generator, high voltage direct current generator shift knob, high voltage direct current generator current adjusting knob, ground terminal, transfer switch, rechargeable battery, described High voltage output cable is arranged on casing top, High voltage output cable is connected with megohmmeter through voltage table by High voltage output cable switch, High voltage output cable is connected with high voltage direct current generator through reometer by High voltage output cable switch, megohmmeter and high voltage direct current generator are respectively by megohmmeter shift knob, high voltage direct current generator shift knob is connected with transfer switch, transfer switch is connected with rechargeable battery is anodal, negative electrode of chargeable battery is connected with ground terminal, described high voltage direct current generator current adjusting knob is connected with high voltage direct current generator, regulate the output current of high voltage direct current generator, between described transfer switch and ground terminal, be connected with external power supply socket, described rechargeable battery is 10AH, and described external power supply socket connects vehicle-mounted 12V power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210141600.0A CN102662116B (en) | 2012-05-09 | 2012-05-09 | Portable type passive direct-current testing device for power cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210141600.0A CN102662116B (en) | 2012-05-09 | 2012-05-09 | Portable type passive direct-current testing device for power cables |
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| Publication Number | Publication Date |
|---|---|
| CN102662116A CN102662116A (en) | 2012-09-12 |
| CN102662116B true CN102662116B (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210141600.0A Active CN102662116B (en) | 2012-05-09 | 2012-05-09 | Portable type passive direct-current testing device for power cables |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777057A (en) * | 2012-10-17 | 2014-05-07 | 天津市电力公司 | True-root-mean-square capacitive current tester |
| CN104375033A (en) * | 2014-11-13 | 2015-02-25 | 清华大学 | Device for testing long-term operation performance of direct current cable system under extra-high voltage strong current working condition |
| CN108919124A (en) * | 2018-03-23 | 2018-11-30 | 苏州博思得电气有限公司 | The method and apparatus for determining high pressure generator peak power output |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701994A (en) * | 2009-11-13 | 2010-05-05 | 航天东方红卫星有限公司 | Conduction insulation test method for low-frequency cable network |
| CN102053204A (en) * | 2011-01-18 | 2011-05-11 | 宝鸡供电局 | Uninterrupted testing method for 1mA voltage of 330kV metal zinc oxide arrester (MOA) |
| CN202002992U (en) * | 2011-02-17 | 2011-10-05 | 济南重工股份有限公司 | Device for distinguishing cable |
| CN202548195U (en) * | 2012-05-09 | 2012-11-21 | 天津市电力公司 | Portable inactive direct-current test device for power cable |
-
2012
- 2012-05-09 CN CN201210141600.0A patent/CN102662116B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701994A (en) * | 2009-11-13 | 2010-05-05 | 航天东方红卫星有限公司 | Conduction insulation test method for low-frequency cable network |
| CN102053204A (en) * | 2011-01-18 | 2011-05-11 | 宝鸡供电局 | Uninterrupted testing method for 1mA voltage of 330kV metal zinc oxide arrester (MOA) |
| CN202002992U (en) * | 2011-02-17 | 2011-10-05 | 济南重工股份有限公司 | Device for distinguishing cable |
| CN202548195U (en) * | 2012-05-09 | 2012-11-21 | 天津市电力公司 | Portable inactive direct-current test device for power cable |
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| CN102662116A (en) | 2012-09-12 |
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| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121129 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121129 Address after: 300010 Tianjin city Hebei District Wujing Road No. 39 Applicant after: Tianjin Electric Power Corp. Applicant after: State Grid Corporation of China Address before: 300010 Tianjin city Hebei District Wujing Road No. 39 Applicant before: Tianjin Electric Power Corp. |
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| C14 | Grant of patent or utility model | ||
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